Question
The average number of playing cards Jack and Ian had was 470. The average number of playing cards Jack and Fred had was 239. If the ratio of Ian's playing cards to Fred's playing cards was 5 : 2, find the number of playing cards Jack had.
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The average number of playing cards Jack and Ian had was 470. The average number of playing cards Jack and Fred had was 239. If the ratio of Ian's playing cards to Fred's playing cards was 5 : 2, find the number of playing cards Jack had.